I've referenced this post a lot because it's so well organized. It's the easiest way for me to explain 'truthiness' to someone new to perl. I regret that I can only upvote this once. And on that topic:

"Reputation: 213 (+220 -7)" 7 downvotes? Who could downvote this?

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“For the Present is the point at which time touches eternity.” - CS Lewis